UNIDENTIFIED

386XM-20/OP

Processor         80386SX
Processor Speed   20/25MHz
Chip Set          OPTI
Max. Onboard DRAM 8MB
Cache             16/32/64KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J1       Turbo LED                  JP8

  Speaker                     J21       Reset switch               S2

  Power LED & keylock         J22       Turbo switch               S3

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CMOS memory normal operation            JP1           pins 2 & 3
                                                              closed

      CMOS memory clear                       JP1           pins 1 & 2
                                                              closed

  »   Monitor type select monochrome          JP2              Open

      Monitor type select color               JP2             Closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      8MB         (4) 1M x 9      (4) 1M x 9

            CACHE CONFIGURATION

     Size          Bank 0          TAG

     16KB        (4) 16K x 1   (2) 4K x 4

     32KB        (4) 4K x 1    (2) 4K x 4

     64KB        (4) 32K x 1   (2) 4K x 4

                   CACHE JUMPER CONFIGURATION

   Size        JP3        JP4        JP5        JP6       JP7

   16KB       1 & 2      1 & 2      1 & 2      Open       Open

   32KB       2 & 3      1 & 2      1 & 2     Closed      Open

   64KB       2 & 3      2 & 3      2 & 3      Open      Closed

  Note: Pins designated should be in the closed position.